Informations about Mi Pad 4 Plus

[Davide1994]

Hi guys,
I have recently bought a Mi Pad 4 Plus LTE and I changed the original chinese ROM with the latest Xiaomi.eu (MIUI 10.3.2 ODJCNXM) with Android 8.1.0.

I would like to change to another ROM because I am experiencing some crashes with apps and games and I have two questions:
1 - If I install a custom ROM with Android 10, can I later come back and install MIUI 10 with Android 8?
2 - Do you also know a good rom with good battery life and without bugs?

Thanks in advance,
sorry for my english,
Davide